mysterious deep hole

A hole with a diameter of more than 10 meters suddenly appeared in a fish pond in Wenxing village, Tianfu town, Beibei district, Chongqing city, causing the fish and water in the

The origin and sudden disappearance of a bottomless pit deep in the hills of eastern Washington state in the United States is a secret for decades.

After long earthquakes and storms, the ground cracked and formed many giant wormholes